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A202096
Number of (n+2)X6 binary arrays avoiding patterns 001 and 011 in rows and columns
2
1600, 10000, 40000, 160000, 490000, 1500625, 3841600, 9834496, 22127616, 49787136, 101606400, 207360000, 392040000, 741200625, 1317690000, 2342560000, 3958926400, 6690585616, 10837642816, 17555190016, 27429984400, 42859350625
OFFSET
1,1
COMMENTS
Column 4 of A202100
LINKS
FORMULA
Empirical: a(n) = 2*a(n-1) +10*a(n-2) -22*a(n-3) -44*a(n-4) +110*a(n-5) +110*a(n-6) -330*a(n-7) -165*a(n-8) +660*a(n-9) +132*a(n-10) -924*a(n-11) +924*a(n-13) -132*a(n-14) -660*a(n-15) +165*a(n-16) +330*a(n-17) -110*a(n-18) -110*a(n-19) +44*a(n-20) +22*a(n-21) -10*a(n-22) -2*a(n-23) +a(n-24)
EXAMPLE
Some solutions for n=3
..1..1..1..1..0..1....1..1..1..1..1..1....1..1..1..1..0..0....1..0..1..0..0..0
..1..1..0..1..0..1....1..1..0..1..0..0....1..0..1..0..0..0....1..1..0..1..0..1
..1..1..1..1..0..1....0..1..0..1..0..1....1..1..0..0..0..0....1..0..1..0..0..0
..1..1..0..1..0..1....0..0..0..0..0..0....1..0..0..0..0..0....1..0..0..0..0..0
..1..1..0..0..0..0....0..1..0..1..0..1....0..1..0..0..0..0....0..0..0..0..0..0
CROSSREFS
Sequence in context: A260499 A309562 A043412 * A258675 A236992 A251969
KEYWORD
nonn
AUTHOR
R. H. Hardin Dec 11 2011
STATUS
approved